208 Journal New York Entomological Society. [Voi. xv. 



Four specimens, Tabernilla, Canal Zone, Panama (August Busck, 

 collector), bred from larvae in bamboo joints. 



Type. — No. 10851, U. S. National Museum. 



The larvae are allied to those of Sabethes undosus, but differ in 

 many particulars, so that a distinct species is indicated, in spite of the 

 apparent identity of the adults. The air-tube is short, without any 

 basal enlargement and but two pairs of single hairs; the body hairs 

 are finer, less coarsely stellate ; the dorsal hooks of the seventh seg- 

 ment with a tooth instead of simple ; maxillae less stout with seven 

 small teeth instead of four large coarse ones. 



Sabethes undosus Coquillett. 



A large series of bred specimens was obtained by Mr. Busck from 

 larvae in bamboo joints, the larvae agreeing with those figured by us 

 under this name. The genus Sahethinus Lutz is apparently synony- 

 mous with Sabethes, and his species Sabethinus aurescens with Sabethes 

 undosus. We are unable to determine at present which specific name 

 has priority. 



Sabethoides Theobald. 



We suppressed this genus as a synonym of Sabethes, but it can be 

 recognized therefrom by the long slender proboscis, not swollen at the 

 tip. The prothoracic lobes are approximate, but not absolutely con- 

 tiguous. Lutz and Theobald place this genus under the heading 

 "palpi short in both sexes," but apparently neither of these authors 

 has seen a male. We have a single male of Sabethoides cyaneus Fab. 

 (= confusus Theob. ) in which the palpi are nearly as long as the pro- 

 boscis. (They are broken, but the end of the long joint reaches to 

 the middle of the proboscis. ) 



Phoniomyia chrysomus, new species. 



$. — Proboscis long and slender, black; occiput dark scaled, a small silvery 

 spot on the vertex ; prothoracic lobes prominent, clothed with shining coppery 

 scales ; mesonotum and scutellum clothed with dark scales with faint greenish and 

 bronzy luster, setce of scutellum dark ; metanotum deep brown with a group of setse ; 

 abdomen black above with faint bluish sheen, beneath silvery white, the colors sepa- 

 rated in a straight line ; legs dark, with brassy reflection beneath, the mid legs with 

 the third and fourth tarsal joints and the apex of the second silvery white at the side. 

 Length, 2.5 mm. 



One specimen, Tabernilla, Canal Zone, Panama (August Busck, 

 collector), bred from larvte in water in leaves of Bromelias. 

 Type. — No. 10854, U.' S. National Museum. 



